Poled PVDF piezoelectric film 30 um thick. Uniaxially oriented with high d31 >25 pC/N. d33 is higher than 22 pC/N and modulus is around 2.0 GPa.
Metallized piezo sheet of PVDF film.
With 50 nm thick sputtered aluminium electrode on both surfaces.
One sheet with size is 180 mm x 290 mm (aluminium around the edges are removed with NaOH)
The aluminium can also be etched with dilute KOH water solution (or NaOH or HCl or vinegar) for producing sensors in university lab.
Great for piezoelectric piezo eneregy harvesting, piezo sensors, microphones, flexible loudspeakers, actuators.
Also for electroactive polymer EAP actuator, soft actuator, robotics
Uniaxially oriented with high d31 (but almost no d32).
Bending actuator https://www.youtube.com/watch?v=G7-wSv4pUwI